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Full Depth Concrete Floor Repair

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how to repair FULL DEPTH DAMAGED CONCRETE FLOORS AND SLABS

For localised repairs where the concrete has failed down to the sub-base e.g. collapsed floor slab intersections

Typical full depth damage in a concrete floor or yard

Typical full depth damage in a concrete slab

METHOD

  • Saw cut square the perimeter of damaged area and break out defective concrete leaving only sound concrete.
  • Re-compact the sub-base and replace any d.p.m.
  • Drill and fix dowel bars with resin anchor grout to tie the repair to the existing concrete where appropriate and place fibreboard to reform the movement joint.
  • For free standing repair place fibreboard round the perimeter of repair to separate it from the original. No dowels are needed.
  • Prime the sides of the repair area for tied repairs.
  • Mix and compact the repair concrete finishing level with the traffic surface.
  • Allow to harden and cut the fibreboard to form a recessed joint if required.
  • Install joint sealant and allow to cure before trafficking.

DIAGRAM: Instructions, tips & tricks for repairing full depth damage to concrete floor slab

Saw cut
Parent concrete
Collapsed sub-base
Compacted sub-base
Concrete repair
Fibreboard
Joint Sealant


MATERIALS

Resin anchor grout:

Lokfix P25 or Anchorset

Fibreboard:

Fibrefill

Repair primer:
dependent on repair medium

Repair concrete type:

Ultracrete FTC

Renderoc LA

Emaco T545

Febset 45

Joint sealant prime:
dependant on sealant

Joint sealant type:

Thioflex 600 Pouring Grade

Colpor 200 PF

Expoflex 800

Nitoseal MS300 or Hybriflex FL

Click on product name for data and full application instructions

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ARCON CONSTRUCTION SUPPLIES, 19-20 PRESTWOOD COURT, LEACROFT ROAD, RISLEY, WARRINGTON, WA3 6SB

TEL: 01925 852225 - FAX: 01925 852122 - EMAIL: mail@arconsupplies.co.uk